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Engineers in Utah making holograms that move

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Posted at 7:13 PM, May 10, 2021

PROVO, Utah — You've likely watched the scene from Star Wars: A New Hope where Princess Leia delivers a message in the form of a Hologram.

Now engineers at Brigham Young University in Provo are getting closer to the goal of making this a reality.

Professor Daniel Smalley and his team can now project small holographic animations into the real world.

It works by trapping a single particle in the air with a laser beam and then moving it around.

It leaves behind a trail of light that floats in mid-air, kind of like a 3D printer for light.

"You can draw images in the air that appear to be continuous in the same way that you can draw your name in the air with a sparkler," said Smalley.

The team created a virtual stick figure capable of walking along and jumping off of a student's finger to demonstrate this.

For now, the animations are tiny, at about a centimeter cubed, but the hope is to get them to about 8 inches, the same size as the Princess Leia Hologram from Star Wars.

This new development paves the way for an immersive experience where people can interact with virtual objects in real life.

Smalley said, "You can imagine a teacher who just uses a regular everyday classroom globe, but now she has satellites flying back and forth over the top of it, or she’s showing weather patterns and how they can move back and forth."

Future versions of this technology could also enhance video calls by bringing people into the room in a hologram.

"That head could then turn and make eye contact and look at different people in the room in a way that could never happen through the abstraction of a screen," said Smalley.

Another way the BYU Professor imagines this technology being used is by projecting different images to different people.

"You could have particles that scatter differently to every viewer and give them content that’s specific to their security clearance or their native language," said Smalley.

A National Science Foundation CAREER grant funds the research group’s latest project.

To see more of the holography work Professor Smalley is doing with his students, check out his lab website.

Jordan Hogan at KSTU first reported this story.